Summary American diplomacy employs contact groups to secure the United States’ national interests and fulfil its role as a superpower in several regions worldwide. This article explores three examples of contact groups formed by US diplomacy to intervene in the civil wars in Libya, Syria and Yemen. It tracks the groups’ formation process, meetings’ content and the US assessment of their influence on American interests and the course of the conflicts. The article concludes that the formation process was developed under sensitive compromises among the stakeholders of each conflict and led to the exclusion of some essential actors. The contact groups were influential at the tactical level and impacted the course of the conflicts in the short term, preventing humanitarian disasters, taking de-escalation steps and securing American interests, but they failed to achieve successful settlements.